Allow Symfony v5. No code changes from v0.2.3.

This also bumps the minimum symfony/symfony to v2.4.

     "require": {
         "php": "^5.4|^7",
-        "symfony/symfony": "^2.3|^3",
-        "sensio/framework-extra-bundle": "^3|^4"
+        "symfony/symfony": "^2.4|^3|^4|^5",
+        "sensio/framework-extra-bundle": "^3|^4|^5"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.0",
-        "mockery/mockery": "^0.9.5",
-        "jms/serializer-bundle": "^1"
+        "symfony/phpunit-bridge": "^3.4.19|^4.1.8|^5",
+        "mockery/mockery": "^0.9.5|^1",
+        "phpoption/phpoption": "^1.1",
+        "jms/serializer-bundle": "^1|^2|^3"
     },

Make logger optional

v0.2.3

Make logger injection optional

Bugfix

v0.2.2

Fixed missing JsonSerializable check

Bugfix

v0.2.1

Fix ApiResponseResponseModel implementation mismatch

v0.2.0

Quote service.yml special characters

v0.1.0.1 5xx Error Logging

Added logging of 5xx API responses

v0.1.2

Added ApiPathConfig

v0.1.1

Removed PHP 7 dependencies